History The formation of Lake Toba and its islands In Samosir Sumatra
The last eruption of Mount Toba spewed out more than 1000 cubic kilometers of eruption material. The height of the eruption reaches 50 km. The ash material spread throughout the Earth's atmosphere to cover the sunlight that entered the earth for several years. As a result, the earth's temperature at that time fell to 3-5 degrees Celsius. Besides producing a large tsunami, the eruption of Mount Toba also resulted in the mass death of humans and several other species of living things. From some of the results of research that has been done, the eruption of this mountain is thought to shrink more than 60% of the human population at that time, which is about 60 million people. This allegation is based on two things. First, the ash material that falls all over the world has hoarded a portion of human habitat. Second, the absence of incoming light causes no photosynthesis of plants. This has an impact on the scarcity of food ingredients resulting in devastating